The Backdrop Doesn't Disappear
The Backdrop Doesn't Disappear

* remove backdrop when session times out

Change-Id: Ife51ede64e11b7d35034975cdf58ecfb796f9177
Closes-Bug: #1642395

nagakiran/contrail-web-core,nagakiran/contrail-web-core,vishnuvv/contrail-web-core,biswajit-mandal/contrail-web-core,vishnuvv/contrail-web-core,nagakiran/contrail-web-core,vishnuvv/contrail-web-core,biswajit-mandal/contrail-web-core,biswajit-mandal/contrail-web-core